Composition for reducing fugitive dust for spray paint

ABSTRACT

A composition for reducing fugitive dust for spray paint according to the present invention comprises 5 to 23 parts by weight of a natural rubber, 1 to 10 parts by weight of a filler, 1 to 10 parts by weight of an adhesive agent, 1 to 3 parts by weight of a coupling agent, 1 to 3 parts by weight of a stabilizer, and 20 to 95 parts by weight of a solvent for dissolving the foregoing components. A spray paint compound for reducing fugitive dust may be prepared by mixing conventional paint for spraying with 3 to 10% by weight of said composition for reducing fugitive dust.

TECHNICAL FIELD

The present invention relates to spray paint to be used in coatingthings like the wall with. More particularly the present inventionrelates to a composition for reducing fugitive dust for spray paintwhich reduces fugitive dust in amount significantly by mixing theforegoing with paint.

BACKGROUND ART

A conventional method of spraying liquid paint is well known whencoating the wall or ceiling of various buildings and constructions orspecific items in industries. When paint is sprayed, however, dust isgenerated from the particles of the paint flown away.

If particles of paint fly away when the paint being sprayed, it resultsin the loss of the amount of the paint having flown away and causes adust pollution problem owing to the paint particles flown away in theform of dust.

Accordingly, the present inventors in an effort to find an effective wayto prevent a conventional paint from generating fugitive dust, havestudied to develop a composition for reducing fugitive dust which may beapplied for use in a form of the mixture with spray paint.

DISCLOSURE OF INVENTION Technical Problem

An object of the present invention is to provide a composition forreducing fugitive dust which impedes as much as possible the fugitivedust generated when paint is sprayed so as to obviate pollutionproblems.

A further object of the present invention is to provide a compositionfor reducing fugitive dust which impedes as much as possible thefugitive dust generated when paint is sprayed so as to mitigate the lossof paint and thereby contribute to the reduction of cost.

Still a further object of the present invention is to provide a paintcompound made up with the composition for reducing fugitive dust whichdecreases fugitive dust in amount significantly.

The above and the other objects of the present invention may be carriedout by the present invention to be described in detail in the following.

Technical Solution

A composition for reducing fugitive dust for spray paint according tothe present invention comprises 5 to 23 parts by weight of a rubberpolymer, 1 to 10 parts by weight of a filler, 1 to 10 parts by weight ofan adhesive agent, 1 to 3 parts by weight of a coupling agent, and 1 to3 parts by weight of a stabilizer, and 20 to 95 parts by weight of asolvent for dissolving the foregoing components.

A paint compound for reducing fugitive dust may be prepared by mixing 3to 10% by weight of the composition for reducing fugitive dust for spraypaint with the conventional paint for spraying.

The present invention will be described in detail in the following.

BEST MODE FOR CARRYING OUT THE INVENTION

The composition for reducing fugitive dust for spray paint comprises 5to 23 parts by weight of a rubber polymer, 1 to 10 parts by weight of afiller, 1 to 10 parts by weight of an adhesive agent, 1 to 3 parts byweight of a coupling agent, 1 to 3 parts by weight of a stabilizer and20 to 95 parts by weight of a solvent for dissolving the foregoingcomponents.

Each component will be described in detail in the following.

In regard to the rubber polymer, the foregoing to be used in the presentinvention may be one out of a natural rubber (NR), a chloroprene rubber(CR), a nitrilobutadiene rubber (NBR), a styrenebutadiene rubber (SBR),and the like.

In regard to the filler, the effect of the foregoing may bedistinguishably different depending on the chemical composition or formduring the time when the filler being compounded with a rubber polymer.The kind of the filler is classified into the organic filler and theinorganic filler depending on the chemical composition; and into thepowder form, the flat board form, the needle form, the globe form, thefiber form, and the fabric form depending on the shape. Main purpose touse the filler is to improve properties of matter and process-ability,but an overuse of the filler may cause the deterioration of theproperties of matter. Either one of the conventional organic filler andinorganic filler may be used for the present invention, and especially afiller having a good compatibility with a rubber polymer is preferableamong the fillers usable including, for example an optic fiber, acalcium carbonate, a talc, a mica, a silica, fine particles of wood, achalk, and the like.

Regarding the adhesive agent, a resin is preferred as the component forincreasing the adhesiveness of the paint particles sprayed. A resinhaving the electronic charges responding to the static electricity of arubber polymer during the time when both the r esin and the rubberpolymer being mixed together is preferred, which includes for example aphenolic resin, a alkyd resin, a melamine resin, an ABS resin, apolyvinyl chloride, a ketone resin, a fluoric resin, an acrylic resin,an epoxy resin, a xylene resin, a mullein, and the like.

With regard to the coupling agent, the foregoing having both the organicfunctional group tending to combine with organic materials and theinorganic functional group tending to respond to inorganic materials andthereby playing a role in combining the two between the organic and theinorganic materials is generally used for improving the mechanicalstrength and water-resistance of the materials comprised of both theorganic and the inorganic materials. The coupling agent according to thepresent invention has a role in improving adhesiveness, weatherability,dye process-ability, and the like of paint. As far as a coupling agentfor the present invention is concerned, a silane coupling agent and atitanate coupling agent are preferred.

Regarding the stabilizer, a heat stabilizer or an ultra violetstabilizer is used for preventing paint from being damaged by thelong-time exposure to heat or light. Said coupling agent and stabilizerof course are optional components in preparing process of thecomposition for reducing fugitive dust for spray paint. The couplingagent or stabilizer may not be used when sufficient amount of theforegoing are already contained in paint or there is no need for use.

In regard to the solvent, a thinner may be preferably used as acomponent for dissolving said rubber polymer, filler, adhesive agent,coupling agent, stabilizer and the like.

The composition for reducing fugitive dust comprising said componentsmay be used in a form of the mixture comprising 3 to 10 weight % inrange of the composition for reducing fugitive dust and a conventionalpaint for spraying.

It has been reported that the spray paint containing the composition forreducing fugitive dust according to the present invention effectuated todecrease fugitive dust in more amount than the conventional paint notcontaining the composition for reducing fugitive dust by about 50 to80%.

All the above-mentioned components may be mixed with the thinner as asolvent in mixer, which may be carried out easily by those ordinarilyskilled in the art.

A mixing process may also be carried out step by step for more effectivecombination. The final composition may be prepared by a methodcomprising for example the following steps of mixing a rubber polymerwith an adhesive agent, mixing the resulting mixture with a filler and athinner, and lastly mixing the resulting mixture with a coupling agentand/or a stabilizer according to need.

A spray paint compound for reducing fugitive dust may be prepared bymixing 3 to 10% by weight of the composition for reducing fugitive dustwith conventional paint for spraying.

The present invention may be better understood by reference to thefollowing examples that are intended for the purpose of illustration andare not to be construed as in any way limiting the scope of the presentinvention, which is defined in the claims appended hereto.

MODE FOR THE INVENTION Examples 1A-1F and Comparative Examples 1A-1D

The compositions for reducing fugitive dust for spray paint pertinent tothe Examples 1A to 1F and the Comparative Examples 1A to 1D wereprepared in accordance with the compositions represented in the Table 1in the following.

Example 1A

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 10 parts by weight ofa natural rubber with 5 parts by weight of an ABS resin in mixer, mixingthe resulting mixture together with 5 parts by weight of a calciumcarbonate and 30 parts by weight of a thinner, and mixing the resultingmixture with 2 parts by weight of a silane coupling agent and 2 parts byweight of a heat stabilizer.

Example 1B

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 6 parts by weight of anatural rubber with 4 parts by weight of an ABS resin in mixer, mixingthe resulting mixture with 5 parts by weight of a calcium carbonate and50 parts by weight of a thinner, and mixing the resulting mixturetogether with 3 parts by weight of a silane coupling agent and 1 part byweight of a heat stabilizer.

Example 1C

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 15 parts by weight ofa nitrilobutadiene and 5 parts by weight of an ABS resin in mixer,mixing the resulting mixture together with 5 parts by weight of acalcium carbonate and 40 parts by weight of a thinner, and mixing theresulting mixture with 2 parts by weight of a titanate coupling agentand 1 part by weight of a heat stabilizer.

Example 1D

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 20 parts by weight ofa nitrilobutadiene with 8 parts by weight of a phenolic resin in mixer,mixing the resulting mixture together with 9 parts by weight of acalcium carbonate and 60 parts by weight of a thinner, and mixing theresulting mixture with 2 parts by weight of a titanate coupling agent.

Example 1E

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 15 parts by weight ofa styrene butadiene with 7 parts by weight of an ABS resin in mixer,mixing the resulting mixture together with 7 parts by weight of acalcium carbonate and 90 parts by weight of a thinner, and mixing theresulting mixture with 2 parts by weight of a heat stabilizer.

Example 1F

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 10 parts by weight ofa styrene butadiene with 5 parts by weight of a phenolic resin in mixerand mixing the resulting mixture together with 5 parts by weight of acalcium carbonate and 25 parts by weight of a thinner.

Comparative Example 1A

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 4 parts by weight of anatural rubber with 6 parts by weight of an ABS resin in mixer, mixingthe resulting mixture together with 5 parts by weight of a calciumcarbonate and 10 parts by weight of a thinner, and mixing the resultingmixture with 3 parts by weight of a silane coupling agent and 3 parts byweight of a heat stabilizer.

Comparative Example 1B

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 10 parts by weight ofa natural rubber with 5 parts by weight of a phenolic resin in mixer,mixing the resulting mixture together with 15 parts by weight of acalcium carbonate and 30 parts by weight of a thinner, and mixing theresulting mixture with 2 parts by weight of a silane coupling agent and2 parts by weight of a heat stabilizer.

Comparative Example 1C

A composition for reducing fugitive dust for spray paint was prepared bya method comprising the following steps of mixing 10 parts by weight ofa nitrilobutadiene with 15 parts by weight of a phenolic resin in mixer,mixing the resulting mixture together with 5 parts by weight of acalcium carbonate and 50 parts by weight of a thinner, and mixing theresulting mixture with 2 parts by weight of a silane coupling agent.

Comparative Example 1D

A composition for reducing fugitive dust for spray paint was prepared bymixing 12 parts by weight of a nitrilobutadiene, 12 parts by weight of amelamine resin, 3 parts by weight of a calcium carbonate, and 1 part byweight of a heat stabilizer together.

TABLE 1 (Unit: Parts by Weight) Comparative Examples Examples 1A 1B 1C1D 1E 1F 1A 1B 1C 1D Rubber Polymer 10 6 15 20 15 10 4 10 10 12 Filler 55 5 9 7 5 5 15 5 3 Adhesive agent 5 4 5 8 7 5 6 5 15 12 Coupling Agent 23 2 2 — 3 2 2 — Stabilizer 2 1 1 — 2 3 2 — 1 Solvent 30 50 40 60 90 2510 30 50 —

Examples 2A-2F and Comparative Examples 2A-2D

Final paint compounds for spraying were each correspondingly prepared bymixing paint with the above-prepared compositions for reducing fugitivedust for spray paint. Compositions between the composition for reducingfugitive dust for spray paint and the paint were shown in Table 2 in thefollowing.

TABLE 2 (Unit: Weight %) Comparative Examples Examples 2A 2B 2C 2D 2E 2F2A 2B 2C 2D Composition for 3 5 7 8 9 10 1 15 20 25 Reducing FugitiveDust Paint 97 95 93 92 91 90 99 85 80 75 Rate of Decrease in the 75 6573 80 51 62 11 13 15 21 Amount of Fugitive Dust (%)

When the above-prepared paint for spraying was sprayed, fugitive dustwas observed to have decreased in the amount by the rate shown in theTable 2. Fugitive dust from the paint for spraying according to thepresent invention was observed to have decreased in the amount by 50 to80% in rate whereas fugitive dust from the paint for spraying out of thescope of the present invention was observed to have decreased in theamount by the much lower rate.

Though fugitive dust in the cases of the Comparative Examples decreasesin the amount, the rate of decrease is not preferable.

1. A composition for reducing fugitive dust for spray paint comprising 5to 23 parts by weight of a rubber polymer, 1 to 10 parts by weight of afiller, 1 to 10 parts by weight of an adhesive agent, and 20 to 95 partsby weight of a solvent for dissolving the foregoing components.
 2. Thecomposition for reducing fugitive dust for spray paint as defined inclaim 1, further comprising 1 to 3 parts by weight of a coupling agentand 1 to 3 parts by weight of a stabilizer.
 3. The composition forreducing fugitive dust for spray paint as defined in claim 1, whereinsaid rubber polymer is selected from the group consisting of a naturalrubber (NR), a chloroprene rubber (CR), a nitrilobutadiene rubber (NBR),and a styrene butadiene rubber (SBR).
 4. The composition for reducingfugitive dust for spray paint as defined in claim 3, wherein said filleris either an organic filler or an inorganic filler.
 5. The compositionfor reducing fugitive dust for spray paint as defined in claim 4,wherein said adhesive agent is selected from the group consisting of aphenolic resin, an alkyd resin, a melamine resin, an ABS resin, apolyvinyl chloride, a ketone resin, a fluoric resin, an acrylic resin,an epoxy resin, a xylene resin, and a mullein.
 6. A spray paint compoundfor reducing fugitive dust containing 3 to 10% by weight of acomposition for reducing fugitive dust spray paint whereby thecomposition comprises 5 to 23 parts by weight of a rubber polymer, 1 to10 parts by weight of a filler, 1 to 10 parts by weight of an adhesiveagent, and 20 to 95 parts by weight of a solvent for dissolving theforegoing components.
 7. The composition for reducing fugitive dust forspray paint as defined in claim 2, wherein said rubber polymer isselected from the group consisting of a natural rubber (NR), achloroprene rubber (CR), a nitrilobutadiene rubber (NBR), and a styrenebutadiene rubber (SBR).
 8. The composition for reducing fugitive dustfor spray paint as defined in claim 7, wherein said filler is either anorganic or an inorganic filler.
 9. The composition for reducing fugitivedust for spray paint as defined in claim 8, wherein said adhesive agentis selected from the group consisting of a phenolic resin, an alkydresin, a melamine resin, an ABS resin, a polyvinyl chloride, a ketoneresin, a fluoric resin, an acrylic resin, an epoxy resin, a xyleneresin, and a mullein.